1. A solid disk of radius 9.20 cm and mass 1.35 kg, which is rolling at a speed of 3.30 m/sm/s, begins rolling without slipping up a 12.0 ? slope.

Part A How long will it take for the disk to come to a stop? Express your answer in seconds.

2. A 2 kg block is moving at v = 5 m/s along a frictionless table and collides with a second 2 kg block that is initially at rest. After the collision, the two blocks stick together and then slide up a 45? frictionless inclined plane, as shown in